2014 F1 development race: Who did what?

Formula 1 teams are notorious for their relentless search for tenths of seconds. Having rounded off the first part of the season, we take a look at the most obvious developments shown on some of the leading teams' cars.

Please note that this list only contains the main developments to give an impression what certain teams have been concentrating on. They have brought much more new parts than listed below.

Mercedes AMG F1

Spanish GP: Additional mini turning vane to the outer skirt of the main air intake; Modified front wing with an additional fin on the main plane; Modified barge boards with an additional slot in the main element

Chinese GP: Modified front wing: after the wing without any upper flaps the team returned to the conventional wing with upper elements; New slot in the floor in front of the rear tyres; New front brake ducts

Spanish GP: New nose cone: slightly bigger dip in the vanity panel; New front wing with a modified upper flap; New turning vanes under the nose

British GP: New mono-pillar for the rear wing; Modified rear wing end plate: introduction of large vertical slot; New front wing wint modified upper fins

German GP: Returning to conventional front wheel nuts after using blown ones; New front wing with modified end plates which was sidelined for qualfying after initial tests; New rear wing with modified DRS activator housing, modified rear wing support pillar and additional slots on the end plate

Hungarian GP: High downforce front wing with modified main plane and top flap of bigger surface; High downforce rear wing with additional horizontal element

Ferrari

Malaysian GP: Air outlets on the upper leading edge of the engine cover; Two different brake housings

Bahrain GP: New L-shaped turning vanes around the outer air boxes

Chinese GP: Blown wheel nuts

Spanish GP: New mono-pillar rear wing support element; New DRS activator; Monkey seat with double flaps; Sensors on the front wing which measure the tyre temperature; Testing of both the blown wheel nut and the old one; Different vertical turning vanes; Tighter engine cover

Canadian GP: New tighter engine covers tried out on Friday – due to overheating the introduction was postponed; New L-shaped turning vanes around the outer air boxes; Returning to the old double rear wing support elements

Austrian GP: New L-shaped turning vanes around the sidepods; Tighter sidepod bodywork at the rear; Asymmetric sidepod air inlets

British GP: New diffuser – modified gurney flap and different vertical elements; New brake discs for Kimi

German GP: New L-shaped turning vanes around the sidepods; Returning to the old double rear wing support elements; Tweaked front wing – different mainplane; Trying out two versions of engine cover

Hungarian GP: Tweaked diffuser – four vortex generators on the lower leading edge; Trying out two versions of engine cover, one aimed for Spa and Monza

Williams

Malaysian GP: -

Bahrain GP: -

Chinese GP: Vertical openings on the fin of the upper rear bodywork; New rear brake ducts: new channels pointing upwards

Canadian GP: New vertical and horizontal mini flaps on the front wing; Modified main profile on rear wing

Austrian GP: -

British GP: -

German GP: Modified endplates and triangular upper flap on front wing

Hungarian GP: -

Clearly, teams have also been busy developing items underneath the skin of their cars, with Williams known to have introduced updated components at nearly every circuit. For obvious reasons, the nature of those updates have not been disclosed. It is safe to assume however that teams have focused on weight saving, lowering the centre of gravity and improving internal cooling efficiency.In Technical